Is the traditional igloo an ecological building?

Analysis of test questions: Many traditional residential buildings are often adapted to the local natural environment. The climate in the Arctic is cold, so Inuit use local materials to build igloos with good heat insulation function. According to the vertical nature of loess, local residents in the Loess Plateau dug caves suitable for living in warm winter and cool summer. Southeast Asia has a hot and humid climate, and local residents often build double-layer bamboo buildings, which are both heat insulation and convenient for rainwater drainage; On the grasslands of Inner Mongolia, people live in yurts that are easy to build, dismantle and carry because of nomadic ways.